of glotjcestee



April 29, 1930. K. MARTIN ATTACHMENT FOR LOOMS Filed July 2, 1929(Ittornegf Patented Apr. 29, 1930 UNITED STATES PATENT OFFICE HENRY K.MARTIN, OF GLOUCESTER, NET/V JERSEY, ASSIGNOR TO BRESLIN' BROTHERSCARPET COMPANY, INC., OF GLOUCESTER, NEW JERSEY ATTACHMENT FOR LOOMSApplication filed July 2, 1929. Serial No. 375,429.

This invention relates to an attachment for looms and hasspecialreference to a novel mechanism which may be attached to theordinary-loom as now constituted and by means of which Wilton fabricsmay be woven so that the carpet design will appear on the back as wellas the front thereof. 7

It is not broadly new, of course, to weave carpets so that the designwill appear on both the front and back and mechanisms have beenheretofore provided for such purposes. Such prior devices, however, havebeen unduly complicated in their construction and have not possessedsuch reliability of operation as is inherent in the mechanism about tobe described.

In the drawing:

Figure 1 is a longitudinal vertical sectional View through the novelmechanism; and

Figure 2 is a detailed plan view of certain of the elements of themechanism.

Referring to the drawing in more detail the numeral 1 designates-aportion of one of the two standards forming a part of the loom; andpivotally suspended from each of these standards is an arm 2. Supportedon the lower ends of the arms 2 is a guide board 3 which is perforatedto receive, what are termed in the art, lingo connections and which arehere designated by the numeral 4: and areweighted at their lowerends asindicated by numeral 5. By means of the weights 5 the lingo connectionsare normally maintained in their lower positions, and likewise thefiguring or warp yarns associated with them are returned to the lowershed after being called up by the jacquard mechanism or after beingraised by the lifter board.

The lifter or trap board is designated by the numeral 6 and is providedwith a number of key-hole openings 7 the narrower portions of which areformed with countersunk portions 8 to normally retain the knots 9 of thelingo connections against lateral movement. This construction of theopenings 7 is well known and the lifter board 6 per se differs fromother lifter boards only in that v the openings 7 extend transversely ofthe board rather than longitudinally thereof.

- Spaced below the lifter board 6 is a lower guide board 11 providedwith openings for the passage of the lingo connections 4. This board isanchored to the conventional uprights of the loom.

I The lifter board 6 is raised and lowered by means of a lever 12pivoted at 13 to the framework of the loom. This lever is caused tooscillate about its pivot by means of a cam 14, and this movement isimparted to the lifter board 6 by means of an arm 15 which is in turnconnected to a lever 16 pivoted at 17 to the framework of the loom. Thislever 16 is connected to the lifter board 6 by means of links 18 whichpass through slots 8 in.

guide board 3. The extent of vertical movement of the board 6 may bevaried by suitable adjustment of a turnbuckle 19 associated with arm 15.

As will be pointed out more fully hereinafter, the guide board 3 in thepresent mechanism is to be moved laterally in proper sequence with theother elements of the loom, and for this purpose the lifter board 6 isprovided with an upwardly extending arm 20 on which is mounted a camplate 21. This plate 21 is formed with a rounded protuberance or camportion 22 which is adapted to cooperate with a cam roller 23 carried bythe guide board 3. It will be obvious therefore that as the cam 22 risesand falls in the regular operation of the mechanism the guide board 3will first be moved to the right (Figure 1) and then will return to itsnormal position due to its pendulum-like suspension means. Thus a verysimple and inexpensive construction is provided which is necessarilymaintained in proper sequence at all times with the other mechanisms ofthe loom.

I will now describe the operation of the present novel mechanism in itsassociation or at least never in any particular sequence.

According to the operation of the present im- I proved mechanism,however, each figuring warp after being called up is dropped below thelower shed while the unselected warp yarns are retained in the uppershed, thus allowing the shuttle to carry a weft thread across the top ofthe yarn while in lowered position. This is accomplished by means of thespecial mechanism herein descrlbed.

Assuming that the lifter board is in its lower position, the jacquardmechan sm selects the proper figuring warp yarn and raises it to thedesired position. The lifter. board 6 immediately follows, carrylng upthe other figuring yarns not being used'in the immediate design butdoesnot raise them so high as the one called up by the'jacquard mechanism.The knot 9 of the selected lingo connection being withdrawn from thecounter'sunk portion of itsslot is moved over into alignment with thelarger opening 7 carpet in. the identical "relationship that it bears tothe other figuring warps on the front of the carpet. Furthermore, bythus being I interlocked below the weft thread the figuring warps aresecurely held against removal through wear and tear'on the carpet.

The trap board 6 is, of course, raised and lowered periodically by cam14 in the usual manner andfurther description of its operation' istherefore believed unnecessary. In those types of looms in which wirejacquards are employed the lash board 30 rises and falls with thecumberboard or trap board but toa somewhat greater degree. In order,however, to produce the pattern on the back of a carpet it is necessarythat the lash board 30 be lowered while the cumberboard is in raisedposition or is traveling toward its raised position. To accomplish thismove ment I provide the lazy-tongs 31 which are pivotally connected at32 to a pendulum construction 33 and has its upper end 31 connected tothe lash board 30. The lower section ofthe lazy-tongs 31 is pivoted at 31 to a lever 35 which is pivoted at v36 to the gantry rails ofthe loom.The, opposite end of lever '35 is connected to lever 16 by means of aturn-buckle 37 so that thislever, as well as lever 16, is operatedthrough the cam 14. The pivot point 36, it will be noted, is disposed ata greater distance from the main frame of the loom than the pivot point17, thereby providing a greater throw for this lever and producing thenecessary vertical movement for the lash board 30.

s It will be apparent, therefore, that as the are retained in the uppershed the lifter board 6. I

From the foregoing description taken in connection with the accompanyingdrawing it will be apparent that I have devised a mechanism in the formof an attachment for conventional looms, by means of which the design ofcarpet is made to appear on'the back thereof. It will also be apparent,that the mechanism employed is extremely simple in construction and sodesigned as to insure reliability in operation. 3

In accordance with the patent statutes I have described what-Inowbelieve to be the preferred form of the invention, but-inasmuch asvarious minor details of construction may be varied wlthout departingfrom the spirit of the invention it is intended that all such variationsbe includedfwith in the scope of the appended claims, What I claim asnew and desire to secure by Letters Patent isz.

1. In a loom for weaving pile fabrics, lingo connections for controllingthe figuring warps, a lifter board for said connections, a guide board,means for raising and lowering the lifter board, and means connectedwith said lifter board for imparting a lateral movement to said guideboard. c 1

i 2. In a'loom for weaving pile fabrics,"lingo connections forcontrolling the figuring warps, a lifter board for said connections, aguide board pivotally suspended adjacent said lifter board, means forraising and lowering the lifterboard, and means connected with said,lifter board for imparting a lateral movement to'said guide board. i,

3. In a'loom for weaving pile fabrics, lingo connections for controllingthe figuring warps, a lifter board for said connections, a guide boardpivotally suspended adjacent said lifter board, means for raising andlowering the lifter board, and acam carried by said lifter board forimparting a lateral movement to said guide'board,

' 4:- In a loom for weaving pile fabrics, lingo connections forcontrolling the figuring warps, a lifterhoard for said connections, aguide hoard pivotally suspended adjacent said lifter board, a secondguide board disposed below said lifter board and connected as have beenselected to form the pile, an oscillatable guide board disposed abovesaid lifter board, a roller carried by said guide board, a cam carriedby said lifter board for cooperation with said roller, and means forraising and lowering the lifter board and its associated cam.

6. In a loom for weaving pile fabrics, lingo connections for controllingthe figuring 1o warps, a lifter board for said connections, a guideboard, a lash board, means for moving the lifter board and lash boardtoward and from each other, and means connected with the lifter boardfor imparting a lateral movement to said guide board.

HENRY K. MARTIN.

